Electric time-switch.



miauw; @AHMED EEG. El, mv. 4if. G. VAN SLYKE.

ELECTRIC TIME SWHGH.

APPLICATION FILED JULY 1.2, 1 907.

2 SHEETS-SHEET 2.

.lOl-IN C. VAN SLYKE, OF FORT COLLINS, COLORADO.

ELECTRIC TIME-SWITCH. y

Specification of Letters Patent.

Patented Dec. si, 1907.

Application filed July 12. 1907. Serial No. 383|498.

, switches, and especially to switches of that general class used for the extinguishing and lighting yof lamps in stores, factories, and other places lor the purpose ot effecting closingtot the lighting circuit at any time during the evening and maintaining the circuit closed 'until daylight the next morning, although, of course, it is equally applicable for various other purposes, such, for instance as in the operation of time locks, or for a variety of circuit closing devices.

- `One of the principal objects of the invention is to provide a device that may be applied to an ordinary clock mechanism with but small expense, and a further object is to ,provide a device that may be very readily adjusted for the purpose ol ytiming the opening and closing movements of the circuit.

l With these and other objects in view, as

I i will more fully hereinafter appear, the invention uconsistsin certain novel features of construction and arrangement of parts, herc- Iinafter tully,` described, illustrated in `the accompanying drawings, and particularly pointed out in the appended claims, 1t being understood that various changes in the-form,

proportions, size and minor details of the structure may be made without departing from the spirit or sacrilicing anyr ol' the advantages ol' the invention.

ln theaccoi'njianying drawings z-Figure 1 is a front elevation ol' an electric time' 'switch constructed 'in accordance with the invention. Fig. 2 is a sectional plan view ol' a portion olI the same on the line 1*2 of Fig'.r l. Fig. 3 is an enlarged detail view of a p'ortion ol' the mechanism.

Similar numerals of rel'erenee are employed to indieate eorrespomling parts throughout the several figures ol' the drawings.

'.lhe present emlwdiment ol' the invention is shown in connection with an ordinary vclock having a timiugfrain A and a striking train B, the controlling`wheel l() ot the latter, however, being provided-with but two notches l1 and l2 in place of the usual number, and the striking mechanism, that is to sav, the gong and hammer, being removed.'

Mounted on the arbor of the Wheel 10 at a point in front of the main frame is a disk 16 carrying a crank pin 17 that is connected by a rod 18 to a switch arm 19. This switc' arm is mounted on a hanger 20 depending frein a plate 21 formed of insulating materiali and constituting the switch base, such plate being supported by a bracket 22 that is secured to the clock frame. Depending from the plate 21 are spaced contacts 2,3 which torni the terminals of a circuit that is in part indicated by the Wires 24 and which may -include lamps or other translatin devices and a source of electrical energy. hen the pin 17 of the crank disk is in the lowermost position, the switch is open and remains open for any predetermined period of time, after which the disk 16 revolves to the extent of .half a revolution, stoppingwith the pin in the uppermost position, and in this position the switch is closed and remains closed for any predetermined period of time.

Mounted on the hollow arbor a of the hour Wheel is a sleeve 30, the friction between the sleeve and the arbor being such that the sleeve is rotated by the time train, although said sleeve may be revolubly adjusted in either direction without turmn the arbor, and to eiect this adjustment tie sleeve is provided at its outer end with a milled disk 31 bearing numerals arranged in two opposed series from three to nine inclusive, these being disposed at equal thirty degree distances lrom Lear-h other.

'Io the rear end ot the sleeve 3() is rigidly secured a pinion 33% that is provided in the present instance with twenty teeth, and mounted on the sleeveis a loose pinion 34 of the same diameter as the pinion 33 and hearing a corresponding number of teeth. 'lhc pinion 34. is held against a shouldcrfon the sleeve by means of ay small. compression spring 36 that hears against the fixed pinion 33, and there. is sulleient friction'exerted on the pinion 34 to compel its rotation with the sleeve. under ordinary conditions, but said pinion 34 is, also, arranged. for independent rotative zuljustment on the sleeve, and to accomplish this adjustment an arm 37 is employed, the arm being bent over the peripher)Y ol the. disk 3l and .being'prm'ided with a. terminal point which may be moved opposite any of the numerals of one series of the disk, the position ol this pointer determining the length of time which the switch is to remain in closed position, vwhile the adjustment of the disk as a whole with relation `to the hour hand of the clock determines the time at which the switch shall beclosed. l

To prevent excessive adjustment ,of the arm 37 the disk is provided with a pair of stop pins 40, so that the arm 37 can only move over one series of numerals from three to nine, inclusive, and in the present instance therefore, the switch may be held closed for any period longer than three hours, or shorter than nine hours, vand this period may be in 'creased or diminished very readily by simple alteration in the dial numbers and gearing connections.

Projecting from the frame of the clock is a stationary arbor 42 `on which are mounted two independently revoluble gears 43 and 44', each of which is provided in the present instance with forty teeth, the gear 43 inter meshing withv the inion 33, and the 44 intermeshin'g with the pinion 34. pinion 43 carries a trip pin 45 and the pinion 44 a trip pin 46, andthes'e pins are arran ed to successively engage a tri per varm 47 t at is carried by the arbor 48 o the tripping meehanism which controls the revolution of the notched wheel 10. As the inions 33 and 34 are mounted on the hour and arbor and e ar are provided with twenty teeth and the gears 43 and '44 are provide with forty teeth it follows that the gears will rotate once each twenty-four hours.

In operation, the disk 31' is first turned until one of,l the iin ers of the dial designating the hour at wich the switch is to be closed is under the hour hand of the clock,

While the pointer arm 37 is lsimilarl adjusted in accordance with the length o time the switch is to remain closed. The adjustment of the dial and the arm serves to -.revolve the pinions 33 and 34, and the movement is transmitted to the gears 43 and 44, so

`that pins 45 and 46 are moved forward or back,so that the pin 45 shall trip-the arm 47 at a certain time, and the pin 46 shall again' trip the arm at another time the distance between the two pins being determined by the length of time the circuit is to remain closed. 'If the switch ,be in open position with the pin 17 in its lowermost position, the first tripping movement will rock the shaft 48 and raise the controlling arm from the wheel 10, so that the latter will be rotated bythe actuating spring of the striking train, and the wheel 10 will make one half of a revolution or' until the controlling arm enters the second or o posite notch of said wheel 10. The dis 16 likewise moves to the extent of half a revolution and moves the pin 17 to the highest position, thus closing the svitch, and the parts re` Imain in this position until the pin 46 again trips the arm, when wheel 10 makes anhev vdevice therefor, and a locking other half revolution and disk 1 6 turns the crank pin 17 to the lowermost position, thus breaking the circuit.

It is obvious that the device 'may be ad- .justed for the closing of the switch at an predetermined time and for maintaining it closed for any length of time.

The clock may be used as an ordinary time piece in an office, store, bank or other place, as well as for the purpose of operating the switch. p

I claim:-

1. In an electric time switch, a clock train includingan hour hand arbor, a sleeve frictionally mounted thereon and' inde' pendenti adjustable, a numeral bearing disk at t e outer end of said sleeve, and adjustable relativel to the hour hand, a pinion secured to the s eeve, a second pinionfrictionally mounted on the sleeve and'adjustable independently thereof, an adjusting arm secured to the-second pinion and terminating adjacent/4to the hery of the disk, `a pair of .inde en gears intermeshing wit said inions and provided with trip ins exten inginward from the adjacent aces of saidr gears, a switchl member, an actuating device therefor,` and a locking means for said actuating device, said locking means being under the control of said trip pins. i

2. In an electric time switch, a clock train including an hour hand arbor, a sleeve frictionally mounted thereon and adjustable independently thereof,4 a numeral bearing disk at the outer end of said sleeve and adjustable relative] to the hour hand, a pinion secured to tiersleev'e, a second pinion frietionally mounted on the sleeve, a spring disposed between the two. pinions and tending to force the second inion against a shoulder onA thesleeve, said second pinion r1 ent y revoluble being independently adjustable, an arm secured to t ie second pinion and vhaving its outer end bent over the peri hery of the Y JOHN- C. VAN SLYKE. Witnesses:-

D. W. S. MADDEN.. l J. H. SE'rzLER.

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